Tube-stopper



(No Model.) 2 Sheets-Sheet 1.

E. W. GRAINE.

TUBB-ST-OPPBR.,

No.v 518,226. Patented Apr. 17,1894.

Il Il ll ll (No Model.)

l 2 sheets-sheet 2. Y. E. W. CRAINE.

TUBE STOPPBR.

mi NAmNAL umoanAPNmu consum'.

WASHINGTON. n. c,

Nrrn TATES TENT ENCE.

EDWIN W. CHAINE, OF MISSOURI VALLEY, IOWA.

TU BE -STOPPER.

SPECIFICATION forming part of Letters V'Patent No. 518,226, dated April17, 1894.

Application filed March 1, 1893.

To all whom t )nay concern.:

Be it known thatI, EDWIN W. CRAINE, a citizen of the United States,residing at Mis souri Valley, in the county of Harrison and State'ofIowa, have invented certain new and useful Improvements inTube-Stoppers; and I do declare the following to be a full, clear, andexact 'description ofthe invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, which form a part of this specification.

My invention relates to steam boilers, and its object is to effectuallystop up a leaky tube to prevent the water and steam from escaping intothe fire box and smoke box.

The invention consists in a rod having at one end a flexible washer totightly lit the tube, and at the other end a shell containing a set ofteeth to bite into the tube, and hold the shell fast, so that a nut onits outer end may be screwed up against a gasket to make a tightjoint.

In the drawings, Figure lis a longitudinal section of a tire tubeboiler, with one of my tube Stoppers in place. Fig. 2 is a section of atube stopper on a larger scale, and Fig. 3 is a view of the shell anditsadjuncts on a still larger scale. Figs. 4, 5, and 6 show anattachment.

. The rod A is composed of short lengths united by couplings a, so thatit can be made longer or shorter, according to the locationof the breakb in the tube B. At the inner end of the tube is a iiexible cuppedwasher O, preferably of leather, backed by a metallic sup port D, thetwo being confined between nuts o. screwed upon the threaded end of theterminal section of the rod. The outer end of the rod carries a screwthreaded collar a2, on which isscrewed the inner end of a tube or shellE, of such diameter externally as to t snugly into the tube B. Near theouter end yof the shell, are two or more holes e, through which projectsharp-edged dogs F attached to the inside of the shell, preferably bymeans of spring tails f riveted to the shell at f. The outer end oftheshell is screw threaded Serial 110.464,26). (No model.)

both internally and externally. A screw plug G isscrewed into it havingin its outer face a wrench socket g and provided. on its inner face witha conical stud g' whose axis lies substantially in the axis of the tubeB. When the plug is screwed into the shell, the cone enters between thedogs and forces them outward through the holes e. A nutH screws upon theoutside of the tube.

The operation of my device is illustrated in 6o Figs. ,1 and 2, in whichit is shown inserted into a leaky tube. The cupped Washer O closes theinner end of the tube. The plug Gr is then turned in, forcing out thedogs and causing them to bite firmly into the tube B.

sired, being suitably packed at its inner end.

Figs. 11, 5 and 6 show an attachment for lifting a section of a brokentube which has dropped out of line. The attachment consists of atapering point or finger K curved in cross section, and having at itswider end, an 8o upright yoke 7c which enables it to be clamped by theouter Anut o. to the end of the rod A, in front of the washer C. The tipof the nger is preferably curved slightly inward, as

shown, to guide it over any obstruction in the tube. A iiexible tonguelo is cut in the rear portion of the finger and is sprung downward toguide thel end of the broken tube section over the washer C.

Having thus described my invention, what 9o I claim, and desire tosecure by Letters Patent, is-

1. A tube stopper comprising a rod carrying at one end a iiexiblewasher, and at the other end a set of dogs, means for forcing them into9 5 the tubes tohold the rod in place, and a nut and gasket for closingthe outer end of the tube, substantiallyr as described.

2. A tube stopper comprising a shell tting4v the tube, a set of dogscarried by the shell, Ioo

The 7o means for forcing them outwardly, a nut screwing upon the outerend of the shell, a rod extending from the inner end of the shell, and aWasher on the end of the rod.

3. The combination with the shell E having the nut H and the holes e ofthe dogs F having spring tailsf, fastenedto the inside of the shell, andmeans for forcing the dogs outwardly through the holes, substantially asdescribed.

4. The combination With the shell E having the holes e, of the dogs Fhaving spring tails f attached to the shell, the conical screw plug G,and the external nut H, substantially as described.

5. The combination with a tube stopper,of a finger projecting from theend thereof at its periphery to lift a broken tube section,substantially as described.

G. The combination with a tube stopper, of a detachable 'lingerprojecting from the end thereof, at its periphery to lift a broken tubesection, substantially as described.

7. The combination with a tube stopper, of a tapering finger having itswider end secured to the end ofthe tube stopper, at its periphery tolift a broken tube section substantially as described.

8. An attachment for a tube stopper, co1nprising a tapering fingercurved in its cross section, and having a yoke at its Wider end,substantially as described.

9. An attachment for a tube stopper, cornprising a tapering lingercurved in cross section, and having a yoke and a flexible tongue at itswider end, substantially as described.

In testimony whereof I afiix my signature in presence of two Witnesses.

` EDWIN WV. CHAINE. Witnesses:

J. S. DEWELL,

WINDSOR J. LLoYD.

